Field Controls B-34TJ Balancing Weight Assembly and Draft Adjustment, OIL Fired Applications

BALANCING WEIGHT ASSEMBLY AND DRAFT ADJUSTMENT

TYPE B-34(See Figure 10)

1. Assemble the “counter balance weight assembly” to the draft control as shown in Figure 10 Thread “counter balance weight” through “threaded nut” attached to the vane. Assemble “hex nut” and “knurled nut” on front of vane as shown in Figure 10.

2. Turn “knurled nut” counter clockwise for less draft, clockwise for more draft.

3. When adjustment is made for desired draft, lock the “counter balance weight assembly” in place by tightening the “hex nut” located under the “knurled nut” against the vane.

TYPE DR (See Figure 11)

1. Assemble the “carriage bolt” through the “weight support bracket” attached to vane.

2. Thread tapered “counter balance weight” on “carriage bolt” (tapered portion of weight must point toward bottom of draft control). For less draft, slide “counter balance weight assembly” toward “Lo” position marked on the bracket; for more draft, slide “counter balance weight assembly” toward “Hi” position.

3. When adjustment is made for desired draft, tighten weight securely to “carriage bolt”. Vertical installation: The 8” and 9” sizes, when mounted in vertical installations only, require a small screw and nut (supplied) assembled in the hole at the bottom vane. The 6” and 7” regulators do not require this additional hardware in vertical installation.

WOOD AND COAL FIRED APPLICATIONS

Figure 10

Figure 11

1.Installations of this Draft Control should be made in accordance with the stove manufacturer's instructions. When this is not possible, follow the directions below: (NOTE: For the regulator to operate properly, the chimney must be clean and free of obstructions.

2.The best setting for wood and coal burners is a draft gauge reading of .04” to .08 W.C. If a draft gauge is not available, with the draft regulator fully installed and a good fire burning, adjust the counterbalance weight closer to the gate for as low a draft setting as possible, without the fire dying or getting smoke-back with the stove door slightly open. To obtain higher heat levels, move the weight away from the gate to increase the setting.

3.For best combustion efficiency, stack temperature (below the draft regulator) should be 350° to 450° F for dry wood. Recommended stack temperatures and draft settings for coal vary according to the manufacturer of the stove.

OIL FIRED APPLICATIONS

Proper operation of the regulator depends upon proper installation and adjustment. Use a CO2 indicator, stack thermometer and draft gauge to adjust draft for oil fired burners. Domestic oil burners work best with the draft over fire of

.01 to .02-inches W.C.

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